Chatham Twp DPW Main STP Water Pollution Control Plant
Chatham, NJ · Morris County · Publicly Owned Treatment Works
- Average flow
- 0.71 MGD
- Design flow
- 1.16 MGD
- NPDES permit
- NJ0020290
- Effective
- Permit expires
- December 2030
- Population served
- 10,107
- CWNS 2022
Chatham Twp DPW Main STP Water Pollution Control Plant is a publicly owned wastewater treatment works in Chatham, Morris County, New Jersey treating an average of 0.71 million gallons per day against a permitted design capacity of 1.16 MGD, serving about 10,107 residents. Treatment on site includes clarifiers, aerated lagoons, carrousels / oxidation ditches, biogas silos. It discharges under NPDES permit NJ0020290 (effective), which expires in December 2030, with 64 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
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Aerated lagoons
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Carrousels / oxidation ditches
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Biogas silos
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Compliance snapshot (last 3 years)
- Total violations
- 64
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Chatham Twp DPW Main STP Water Pollution Control Plant.
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Nearby wastewater treatment plants in New Jersey
New Providence · 1 mi away
—
Berkeley Heights · 3 mi away
1.15 MGD
Chatham · 3 mi away
1.91 MGD
Warren · 5 mi away
0.24 MGD
Stirling · 5 mi away
0.9 MGD
Morristown · 6 mi away
2.57 MGD
Morristown · 7 mi away
1.08 MGD
Warren · 7 mi away
0.39 MGD
Chatham Twp DPW Main STP Water Pollution Control Plant: frequently asked questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed September 11, 2026; facility record last updated April 5, 2025.